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Recent works have shown that tackling offline reinforcement learning (RL) with a conditional policy produces promising results. The Decision Transformer (DT) combines the conditional policy approach and a transformer architecture, showing…

Machine Learning · Computer Science 2023-05-26 Taku Yamagata , Ahmed Khalil , Raul Santos-Rodriguez

As the next generation of mobile systems evolves, artificial intelligence (AI) is expected to deeply integrate with wireless communications for resource management in variable environments. In particular, deep reinforcement learning (DRL)…

Signal Processing · Electrical Eng. & Systems 2024-10-15 Jie Zhang , Jun Li , Long Shi , Zhe Wang , Shi Jin , Wen Chen , H. Vincent Poor

In-context learning is a promising approach for offline reinforcement learning (RL) to handle online tasks, which can be achieved by providing task prompts. Recent works demonstrated that in-context RL could emerge with self-improvement in…

Machine Learning · Computer Science 2024-06-03 Sili Huang , Jifeng Hu , Hechang Chen , Lichao Sun , Bo Yang

Decision Transformer (DT), a trajectory modelling method, has shown competitive performance compared to traditional offline reinforcement learning (RL) approaches on various classic control tasks. However, it struggles to learn optimal…

Machine Learning · Computer Science 2025-09-18 Xingshuai Huang , Di Wu , Benoit Boulet

We introduce a framework that abstracts Reinforcement Learning (RL) as a sequence modeling problem. This allows us to draw upon the simplicity and scalability of the Transformer architecture, and associated advances in language modeling…

Offline reinforcement learning (RL) algorithms can learn better decision-making compared to behavior policies by stitching the suboptimal trajectories to derive more optimal ones. Meanwhile, Decision Transformer (DT) abstracts the RL as…

Machine Learning · Computer Science 2024-05-28 Ziqi Zhang , Jingzehua Xu , Jinxin Liu , Zifeng Zhuang , Donglin Wang , Miao Liu , Shuai Zhang

The Decision Transformer (DT) has established a powerful sequence modeling approach to offline reinforcement learning. It conditions its action predictions on Return-to-Go (RTG), using it both to distinguish trajectory quality during…

Artificial Intelligence · Computer Science 2026-01-23 Yongyi Wang , Hanyu Liu , Lingfeng Li , Bozhou Chen , Ang Li , Qirui Zheng , Xionghui Yang , Wenxin Li

This paper introduces Elastic Decision Transformer (EDT), a significant advancement over the existing Decision Transformer (DT) and its variants. Although DT purports to generate an optimal trajectory, empirical evidence suggests it…

Machine Learning · Computer Science 2023-10-23 Yueh-Hua Wu , Xiaolong Wang , Masashi Hamaya

Improving user retention with reinforcement learning~(RL) has attracted increasing attention due to its significant importance in boosting user engagement. However, training the RL policy from scratch without hurting users' experience is…

Information Retrieval · Computer Science 2023-03-14 Kesen Zhao , Lixin Zou , Xiangyu Zhao , Maolin Wang , Dawei yin

Decision Transformer (DT) can learn effective policy from offline datasets by converting the offline reinforcement learning (RL) into a supervised sequence modeling task, where the trajectory elements are generated auto-regressively…

Machine Learning · Computer Science 2024-11-19 Zhihong Liu , Long Qian , Zeyang Liu , Lipeng Wan , Xingyu Chen , Xuguang Lan

Decision Transformer (DT) is a recently proposed architecture for Reinforcement Learning that frames the decision-making process as an auto-regressive sequence modeling problem and uses a Transformer model to predict the next action in a…

Machine Learning · Computer Science 2022-11-29 Max Siebenborn , Boris Belousov , Junning Huang , Jan Peters

The field of Offline Reinforcement Learning (RL) aims to derive effective policies from pre-collected datasets without active environment interaction. While traditional offline RL algorithms like Conservative Q-Learning (CQL) and Implicit…

Machine Learning · Computer Science 2025-11-21 Ali Murtaza Caunhye , Asad Jeewa

Decision Transformers (DTs) have emerged as a powerful framework for sequential decision making by formulating offline reinforcement learning (RL) as a sequence modeling problem. However, extending DTs to online settings with pure RL…

Machine Learning · Computer Science 2026-01-05 Junkai Luo , Yinglun Zhu

Recent work has shown that offline reinforcement learning (RL) can be formulated as a sequence modeling problem (Chen et al., 2021; Janner et al., 2021) and solved via approaches similar to large-scale language modeling. However, any…

Machine Learning · Computer Science 2022-07-14 Qinqing Zheng , Amy Zhang , Aditya Grover

Offline reinforcement learning (RL) is a challenging task, whose objective is to learn policies from static trajectory data without interacting with the environment. Recently, offline RL has been viewed as a sequence modeling problem, where…

Machine Learning · Computer Science 2023-03-08 Shengchao Hu , Li Shen , Ya Zhang , Dacheng Tao

Large transformer models trained on diverse datasets have shown a remarkable ability to learn in-context, achieving high few-shot performance on tasks they were not explicitly trained to solve. In this paper, we study the in-context…

Machine Learning · Computer Science 2023-06-27 Jonathan N. Lee , Annie Xie , Aldo Pacchiano , Yash Chandak , Chelsea Finn , Ofir Nachum , Emma Brunskill

Recent work has shown that Large Language Models (LLMs) can be incredibly effective for offline reinforcement learning (RL) by representing the traditional RL problem as a sequence modelling problem (Chen et al., 2021; Janner et al., 2021).…

Machine Learning · Computer Science 2023-02-01 Shyam Sudhakaran , Sebastian Risi

This paper describes a purely data-driven solution to a class of sequential decision-making problems with a large number of concurrent online decisions, with applications to computing systems and operations research. We assume that while…

Artificial Intelligence · Computer Science 2019-10-02 Hardik Meisheri , Vinita Baniwal , Nazneen N Sultana , Balaraman Ravindran , Harshad Khadilkar

In the realm of online advertising, advertisers partake in ad auctions to obtain advertising slots, frequently taking advantage of auto-bidding tools provided by demand-side platforms. To improve the automation of these bidding systems, we…

Machine Learning · Computer Science 2025-06-30 Hao Jiang , Yongxiang Tang , Yanxiang Zeng , Pengjia Yuan , Yanhua Cheng , Teng Sha , Xialong Liu , Peng Jiang

Decision Transformer (DT) formulates offline reinforcement learning as autoregressive sequence modeling, achieving promising results by predicting actions from a sequence of Return-to-Go (RTG), state, and action tokens. However, RTG is a…

Machine Learning · Computer Science 2026-05-08 Yongyi Wang , Hanyu Liu , Lingfeng Li , Bozhou Chen , Ang Li , Qirui Zheng , Xionghui Yang , Chucai Wang , Wenxin Li
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